These are the known mechanical and performance specifications for your 1979 Yamaha IT.
Basic Specs
Engine
Displacement397.00 ccm (24.22 cubic inches)
Type
DetailsSingle cylinder, two-stroke
Max RPM
Compression
Bore/Stroke85.0 x 0.0 mm (3.3 x inches)
Valves/Cylinder
FuelingCarburettor. mikuni
IgnitionMagneto type
Exhaustexpansion chamber
Lubricationpre mix
CoolingAir
Fuel Economy & Polution
Fuel Consumption
Fuel Capacity12.00 litres (3.17 gallons)
Emissions
Chassis
Frame TypeTubular steel double cradle
Rake
Trail
Front Suspensionforks
Front Travel230 mm (9.1 inches)
Rear SuspensionMonoshock, nitrogen canister
Rear Travel205 mm (8.1 inches)
Seat
Seat Height
Alt. Seat Height
Total Height1,170 mm (46.1 inches)
Total Length2,210 mm (87.0 inches)
Total Width935 mm (36.8 inches)
Ground Clearance275 mm (10.8 inches)
Wheelbase1,420 mm (55.9 inches)
Dry Weight113.4 kg (250.0 pounds)
Wet Weight
Wheels & Brakes
Front Tire/Tyre-3.00-21-4PR
Rear Tire/Tyre-4.50-18-4PR
Front BrakesExpanding brake (drum brake)
Front Brake Diameter
Rear BrakesExpanding brake (drum brake)
Rear Brake Diameter
Wheels
Comments